Derivatives of cephalosporins, their process of separation and antibiotic drugs containing the said derivatives
US4578377A · kind A · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1985 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Apr 16, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to cephalosporins having the formula: ##STR1## in which COOA is an acidic radical, salt or ester, and R.sub.1 represents a group: ##STR2## in which R.sub.A and R.sub.B are H or alkyl or together form a cycloalkyl with the carbon to which they are bonded, R.sub.2 and R.sub.3 are H, alkyl or alkenyl, R.sub.4 and R.sub.5 are H, alkyl or alkenyl or together form a ring to the nitrogen atom with which they are bonded. This invention also relates to a process for the preparation of these compounds and to drugs containing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.